CAS registry number validation results based on the following idea:

CAS numbers are validated against the 2021 CAS Common Chemistry databases, based on InChIKey match
validated numbers are detected on Wikipedia using a substring match

Therefore, a missing can have multiple reasons. The "category" pages likely will have to be solved; the missing CAS number on Wikipedia here reflects that the Wikidata and Wikipedia pages reflect different things: particularly, the sitelink is likely wrong.

Curation Feedback

The below expectations may be incorrect. If you analyzed the situation and the given CAS is not correct for the Wikipedia entry, the following could be the case:

the Wikipedia-Wikidata sitelink is incorrect (e.g. stereochemistry mismatch)
the InChIKey used for the match is incorrect.

Please report these things below under 'Curation notes' which I will monitor.

2021-04-06

5678 validated CAS registry numbers in Wikidata linked to Wikipedia pages (https://w.wiki/3A88).

552 CAS registry numbers in Wikipedia match Wikidata and CAS Common Chemistry. 21 do not, below.

Not categories

Expected the validated CAS registry number 7690-51-9 to be listed on Pelargonidin but was missing
Expected the validated CAS registry number 159997-94-1 to be listed on Biricodar but was missing
Expected the validated CAS registry number 99200-09-6 to be listed on Nebivolol but was missing
Expected the validated CAS registry number 25520-73-4 to be listed on L-Dopaquinone but was missing
Expected the validated CAS registry number 14392-02-0 to be listed on Chromium-51 but was missing
Expected the validated CAS registry number 88909-96-0 to be listed on Virstatin but was missing
Expected the validated CAS registry number 101-29-1 to be listed on Diodone but was missing
Expected the validated CAS registry number 2124-57-4 to be listed on MK-7 but was missing
Expected the validated CAS registry number 90-84-6 to be listed on Amfepramone but was missing
Expected the validated CAS registry number 547-23-9 to be listed on Torulene but was missing
Expected the validated CAS registry number 5982-99-0 to be listed on Androstanedione but was missing
Expected the validated CAS registry number 3616-04-4 to be listed on Phosphocholine but was missing
Expected the validated CAS registry number 53400-67-2 to be listed on Tiquinamide but was missing
Expected the validated CAS registry number 13520-69-9 to be listed on Iron(II)_perchlorate but was missing
Expected the validated CAS registry number 14596-10-2 to be listed on Americium-241 but was missing
Expected the validated CAS registry number 90-56-2 to be listed on Sarmentose_(chemistry) but was missing
Expected the validated CAS registry number 3393-18-8 to be listed on Deoxyinosine_monophosphate but was missing
Expected the validated CAS registry number 644-64-4 to be listed on Dimetilan but was missing
Expected the validated CAS registry number 99007-20-2 to be listed on Pyridoxine/doxylamine but was missing
Expected the validated CAS registry number 21019-23-8 to be listed on Desoxyvincaminol but was missing
Expected the validated CAS registry number 2451-01-6 to be listed on Terpin but was missing

Curation notes

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